/Engine/Source/Developer/TraceInsights/Public/Insights/ViewModels/TimingEventsTrack.h
PreUpdate callback called each frame, but only if the track is visible. In this update, neither the postion nor the size of the track is yet computed. Track should update here its height.
virtual void PreUpdate ( const [ITimingTrackUpdateContext](API\Developer\TraceInsights\Insights\ViewModels\ITimingTrackUpdateContext) & Context )